John Deere 9420R

Last Updated: July 2024

Overview

The John Deere 9420R is a large, agriculture-focused tractor powered by a John Deere Diesel six-cylinder vertical engine with two turbochargers, air-to-air aftercooler, and D.E.F exhaust treatment. It has a displacement of 826 cubic inches and operates at 2100 rated RPM. The engine produces 395 hp in forward gears 1-4 and 420 hp in all other gears. It is equipped with a selective gear fixed ratio transmission with full range operator controlled power shift, offering 18 forward and 6 reverse gears. With an operating weight of 42,965 pounds, it showcases durability and stability. The tractor features a four-wheel drive system with duals, a closed-center pressure/flow compensated hydraulic system, and a 12-volt electric starting system. The hitch system includes Category 4N and 4 options, with lift capacities of 16,084 lbs and 15,769 lbs, respectively. The operator station is equipped with a cab structure. Additional details include specifications for the air cleaner, oil filter, oil cooler, fuel cooler, and exhaust treatment systems.

Key Specifications

Power Output: 395 (forward gears 1-4), 420 (all other gears)

Transmission: Selective gear fixed ratio with full range operator controlled power shift

Operating Weight: 42965

Fuel Type: Diesel

Lift Capacity: Category 4N: 16084 lbs, Category 4: 15769 lbs

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John Deere 9420R Tractor

Technical Specifications

Engine

Manufacturer: John Deere
Model: John Deere Diesel six-cylinder vertical with two turbochargers, air-to-air aftercooler, and D.E.F (Diesel Exhaust Fluid) exhaust treatment
Cooling Type: Liquid-cooled
Cylinder Orientation: -
Valve Configuration: -
Fuel Type: Diesel
Induction Type: Electronic injection with turbochargers and aftercooler
Cylinders: 6
Displacement (ci): 826
Bore (in): 5.197
Stroke (in): 6.496
Rated RPM: 2100
Power Output (hp): 395 (forward gears 1-4), 420 (all other gears)

Transmission

Type: Selective gear fixed ratio with full range operator controlled power shift
Forward Gears: 18
Reverse Gears: 6
Total Gears: -

Dimensions

Length (in): 314.3
Width (in): 176
Height (in): Cab - 145, Exhaust - 157 (Highest points provided, ground to hood - 108)
Operating Weight (lb): 42965

Power Take-Off (PTO)

PTO Type: -
PTO Speed 1 (rpm): -
PTO Speed 2 (rpm): -
PTO Speed 3 (rpm): -

Miscellaneous

Chassis: -
Drive Type: -
Steering Type: -
Coolant Capacity (qts): 67.1
Front Tire Diameter (in): -
Front Tire Width (in): -
Rear Tire Diameter (in): -
Rear Tire Width (in): -
Front/Rear Rim Diameter (in): -
Tire Type: -
Manufacture - End Year: -
Hitch Type: Category 4N, Category 4
Hitch Category: IV
Hitch Position: Rear
Hitch Capacity (lb): Category 4N: 16084 lbs, Category 4: 15769 lbs
Operator Station Type: Cab
Starter Type: 12 volt electric
Brake Type: -
Hydraulic System Type: Closed-center pressure/flow compensated

Test Results

Nebraska Tractor Test Laboratory - Test Date: April 2 to April 15, 2015

Maximum Power and Fuel Consumption

Maximum Power: 369.02 HP (275.18 kW) at 1700 rpm
Fuel Consumption at Maximum Power: 19.83 Gal/hr (75.08 l/h) with a fuel efficiency of 0.378 lb/hp.hr (0.230 kg/kW.h)
DEF Consumption: 0.34 Gal/hr (1.30 l/h)

Drawbar Performance

Power at Maximum Drawbar Power (7th Gear): 325.79 HP (242.94 kW) with a drawbar pull of 25719 lbs (114.40 kN) and a speed of 4.75 mph (7.64 km/h)
Fuel Consumption at Maximum Drawbar Power: 0.457 lb/hp.hr (0.278 kg/kW.h) with a fuel efficiency of 15.40 Hp.hr/gal (3.03 kW.h/l)

Torque and Engine Performance

Maximum Torque: 1224 lb.-ft. (1660 Nm) at 1550 rpm
Torque Rise: 47.5% with power increase at 1700 rpm of 11.3%

Hydraulic Performance

Maximum Force Exerted: 21408 lbs (95.2 kN) at hitch points using Category 4N lift cylinders
Pump Delivery Rate: 60.5 GPM (229.0 l/min) at minimum pressure and rated engine speed
Hydraulic Power: 88.0 HP (65.6 kW) at delivery pressure of 2486 psi (171 bar)

Overall Efficiency

Fuel Efficiency at Standard PTO Speed (1000 rpm): 17.75 Hp.hr/gal (3.50 kW.h/l)
Fuel Consumption: 20.47 Gal/hr (77.48 l/h) at 1895 rpm

NTTL.(2015).Test 2108: John Deere 9420R. Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/2546